Maturation of consonant perception,but not vowel perception,predicts lexical skills at 12 months

Consonants and vowels differentially contribute to lexical acquisition. From 8 months on, infants' preferential reliance on consonants has been shown to predict their lexical outcome. Here, the predictive value of German-learning infants' (n = 58, 29 girls, 29 boys) trajectories of consonant and vowel perception, indicated by the electrophysiological mismatch response, across 2, 6, and 10 months for later lexical acquisition was studied. The consonant-perception trajectory from 2 to 6 months (β = −2.95) and 6 to 10 months (β = −.91), but not the vowel-perception trajectory, significantly predicted receptive vocabulary at 12 months. These results reveal an earlier predictive value of consonant perception for word learning than previously found, and a particular role of the longitudinal maturation of this skill in lexical acquisition.     

Auswirkungen einer Intervention auf die Auseinandersetzung und Arbeit mit Bildungsstandards bei Mathematik-Lehrkräften

The introduction of educational standards in Germany forced teachers to change their perspective in order to achieve competence-oriented teaching. The initial representative surveys throughout Germany indicated that a short time after the introduction of the educational standards, teachers in various school forms were still very slow to implement the idea of competence-oriented teaching in their everyday school life. This article presents the effects of a newly developed intervention programme in which mathematics teachers familiarised themselves with educational standards for the first time. The teacher data and the performance data of the pupils of the schools participating in the project are compared in a longitudinal study with the data of schools which were not included in the intervention programme. The results indicate that after the intervention programme has run for one year, mathematics teachers in the project schools are more competence-oriented in their teaching and reflect more intensively on the concept of the educational standards than mathematics teachers in the comparison schools.